- Smith, Robert Pearsall, 1827-18982
- Stieler, Adolf, 1775-18362
- Stone, William James, 1798-18652
- Stratton, J. F. (Jonathan F.)2
- Talcott, Andrew, 1797-18832
- Tyrrell, Joseph Burr, 1858-19572
- U.S. Lake Survey, issuing body2
- United States. Congress. Senate (34th, 1st Session : 1855)2
- United States. Congress. Senate (48th, 1st Session : 1883)2
- United States. Hydrographic Office2
- United States. Office of Explorations and Surveys, director.2
- United States. Post Office Department2
- United States. Surveyor General2
- United States. War Department. Corps of Engineers2
- Utagawa, Sadahide, 1807-18732
- Valck, G. (Gerard), 1651 or 1652-1726.2
- Warder & Catlett2
- Warren, G. K. (Gouverneur Kemble), 1830-18822
- Wenig, E.2
- Wesolowski, Ludwik.2